The color blue -

Thinking about color today, I remembered reading The Forest People by Colin Turnbull. My memory is that those who live in a forest of greens when taken to open areas have trouble seeing space and the blue of the sky. Googling, I come to this article.

Might we evolve to differentiate more colors, or does computer use confine us to a few?

The article states that Lazarus Geiger "looked to see when "blue" started to appear in languages." "Every language first had a word for black and for white, or dark and light. The next word for a color to come into existence - in every language studied around the world - was red, the color of blood and wine. After red, historically, yellow appears, and later, green (though in a couple of languages, yellow and green switch places). The last of these colors to appear in every language is blue. The only ancient culture to develop a word for blue was the Egyptians - and as it happens, they were also the only culture that had a way to produce a blue dye."